I've had a couple of those. They can be harmless for a while and then suddenly turn on ya and start wrecking house. 
 
Try burying a cup with food into the sand; he get's lured in and can't climb out. It usually works. With my xanthids I had to eventually stake them out, chase them into a loose piece of live rock and drag the rock out for a fist fist with some crabs. 
		
	
		
		
		
		
		
	
		
		
	
	
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